Google's Wi-Fi hotspots will probably be fairly well-marked, or at least under a partner name like Boingo. Those might not have tight WPA2-level security, however, and other hotspots might be even less secure. PC World suggests ensuring that your system has automatic Wi-Fi connections turned off, device or media sharing disabled, and, unless you're just reading articles and surfing around, using a VPN connection for anything involving accounts and passwords.

How to create a VPN in a public space? Web Worker Daily and eHow both have fairly good tutorials. If you've got your own tips on safe public browsing, share them in the comments.